While creating backup, DA creates temporary backup file. e.g.:
-rw-r--r-- 1 root root 20598996 May 5 10:20 backup-May-5-2016-1.tar.gz
It is readable by any user, when backup is completed DA chowns file to user and changes permissions:
-rw-r----- 1 user user 106708161 May 5 10:20 backup-May-5-2016-1.tar.gz
Temporary backup file should not be readable by any user because:
1) It is security vulnerability, if backups DIR is created with X perm for any user, anyone can read whole user backups while it is processing
2) Sometimes users downloads corrupted backup(while backup is processing).
-rw-r--r-- 1 root root 20598996 May 5 10:20 backup-May-5-2016-1.tar.gz
It is readable by any user, when backup is completed DA chowns file to user and changes permissions:
-rw-r----- 1 user user 106708161 May 5 10:20 backup-May-5-2016-1.tar.gz
Temporary backup file should not be readable by any user because:
1) It is security vulnerability, if backups DIR is created with X perm for any user, anyone can read whole user backups while it is processing
2) Sometimes users downloads corrupted backup(while backup is processing).